gitorious.org Git - online-glom:gwt-glom.git/blob - src/main/java/org/glom/web/client/activity/TableSelectionActivity.java

1 /*

3 *

4 * This file is part of GWT-Glom.

5 *

6 * GWT-Glom is free software: you can redistribute it and/or modify it

7 * under the terms of the GNU Lesser General Public License as published by the

8 * Free Software Foundation, either version 3 of the License, or (at your

9 * option) any later version.

10 *

11 * GWT-Glom is distributed in the hope that it will be useful, but WITHOUT

12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License

14 * for more details.

15 *

16 * You should have received a copy of the GNU Lesser General Public License

17 * along with GWT-Glom. If not, see <http://www.gnu.org/licenses/>.

18 */

19

20 package org.glom.web.client.activity;

21

22 import org.glom.web.client.ClientFactory;

23 import org.glom.web.client.OnlineGlomServiceAsync;

24 import org.glom.web.client.StringUtils;

25 import org.glom.web.client.Utils;

26 import org.glom.web.client.event.LocaleChangeEvent;

27 import org.glom.web.client.event.QuickFindChangeEvent;

28 import org.glom.web.client.event.TableChangeEvent;

29 import org.glom.web.client.place.DetailsPlace;

30 import org.glom.web.client.place.HasRecordsPlace;

31 import org.glom.web.client.place.HasTablePlace;

32 import org.glom.web.client.place.ListPlace;

33 import org.glom.web.client.place.ReportPlace;

34 import org.glom.web.client.ui.TableSelectionView;

35 import org.glom.web.client.ui.View;

36 import org.glom.web.shared.DocumentInfo;

37 import org.glom.web.shared.Reports;

38

39 import com.google.gwt.activity.shared.AbstractActivity;

40 import com.google.gwt.core.client.GWT;

41 import com.google.gwt.event.dom.client.ChangeEvent;

42 import com.google.gwt.event.dom.client.ChangeHandler;

43 import com.google.gwt.event.dom.client.HasChangeHandlers;

44 import com.google.gwt.event.shared.EventBus;

45 import com.google.gwt.event.shared.HandlerRegistration;

46 import com.google.gwt.i18n.client.LocaleInfo;

47 import com.google.gwt.place.shared.Place;

48 import com.google.gwt.user.client.Window;

49 import com.google.gwt.user.client.rpc.AsyncCallback;

50 import com.google.gwt.user.client.ui.AcceptsOneWidget;

51

52 /**

53 *

54 */

55 public class TableSelectionActivity extends AbstractActivity implements View.Presenter {

56 private final ClientFactory clientFactory;

57 private String documentID;

58 private String documentTitle;

59 private String tableName;

60 private String quickFind;

61 private HandlerRegistration tableChangeHandlerRegistration = null;

62 private HandlerRegistration quickFindChangeHandlerRegistration = null;

63 private HandlerRegistration localeChangeHandlerRegistration = null;

64 private HandlerRegistration reportChangeHandlerRegistration = null;

65

66 // This activity isn't properly configured until the List or Details Place is set with the appropriate methods

67 public TableSelectionActivity(final ClientFactory clientFactory) {

68 this.clientFactory = clientFactory;

69 }

70

71 /**

72 * Invoked by the ActivityManager to start a new Activity

73 */

74 @Override

75 public void start(final AcceptsOneWidget containerWidget, final EventBus eventBus) {

76

77 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

78 tableSelectionView.setPresenter(this);

79

80 // For table changes with the tableSelector:

81 final HasChangeHandlers tableSelector = tableSelectionView.getTableSelector();

82 tableChangeHandlerRegistration = tableSelector.addChangeHandler(new ChangeHandler() {

83 @Override

84 public void onChange(final ChangeEvent event) {

85 // Fire a table change event so that other views (e.g. the details view) know about the change and can

86 // update themselves.

87 eventBus.fireEvent(new TableChangeEvent(tableSelectionView.getSelectedTableName()));

88

89 // Update the browser title because there's place change and the setPlace() method will not be called.

90 Window.setTitle(documentTitle + ": " + tableSelectionView.getSelectedTableTitle());

91 }

92 });

93

94 // For quick find changes with the quick find box:

95 final HasChangeHandlers quickFindBox = tableSelectionView.getQuickFindBox();

96 quickFindChangeHandlerRegistration = quickFindBox.addChangeHandler(new ChangeHandler() {

97 @Override

98 public void onChange(final ChangeEvent event) {

99 // Fire a quickfind change event so that other views (e.g. the details view) know about the change and

100 // can

101 // update themselves.

102 eventBus.fireEvent(new QuickFindChangeEvent(tableSelectionView.getQuickFindText()));

103

104 // Update the browser title because there's place change and the setPlace() method will not be called.

105 // TODO? Window.setTitle(documentTitle + ": " + tableSelectionView.getSelectedTableTitle());

106 }

107 });

108

109 // For locale changes with the localeSelector:

110 final HasChangeHandlers localeSelector = tableSelectionView.getLocaleSelector();

111 localeChangeHandlerRegistration = localeSelector.addChangeHandler(new ChangeHandler() {

112 @Override

113 public void onChange(final ChangeEvent event) {

114 // Show the translated version of the document title and the table names:

115 final String localeID = tableSelectionView.getSelectedLocale();

116 fillView(tableSelectionView);

117

118 final String newURL = Window.Location.createUrlBuilder()

119 .setParameter(LocaleInfo.getLocaleQueryParam(), localeID).buildString();

120 Window.Location.assign(newURL);

121

122 // Fire a locale change event so that other views (e.g. the details view) know about the change and can

123 // update themselves.

124 eventBus.fireEvent(new LocaleChangeEvent(localeID));

125 }

126 });

127

128 // For report choices with the reportSelector:

129 final HasChangeHandlers reportSelector = tableSelectionView.getReportSelector();

130 reportChangeHandlerRegistration = reportSelector.addChangeHandler(new ChangeHandler() {

131 @Override

132 public void onChange(final ChangeEvent event) {

133 goTo(new ReportPlace(documentID, tableName, tableSelectionView.getSelectedReport(), quickFind));

134 }

135 });

136

137 fillView(tableSelectionView);

138

139 // we're done, set the widget

140 containerWidget.setWidget(tableSelectionView.asWidget());

141 }

142

143 private void fillView(final TableSelectionView tableSelectionView) {

144 // get the table names, table titles and default table index for the current document

145 final AsyncCallback<DocumentInfo> callback = new AsyncCallback<DocumentInfo>() {

146 @Override

147 public void onFailure(final Throwable caught) {

148 // TODO: create a way to notify users of asynchronous callback failures

149 GWT.log("AsyncCallback Failed: OnlineGlomService.getDocumentInfo()");

150 }

151

152 @Override

153 public void onSuccess(final DocumentInfo result) {

154 tableSelectionView.setTableSelection(result.getTableNames(), result.getTableTitles());

155

156 if (StringUtils.isEmpty(tableName)) {

157 tableName = result.getTableNames().get(result.getDefaultTableIndex());

158 }

159

160 tableSelectionView.setSelectedTableName(tableName);

161

162 tableSelectionView.setLocaleList(result.getLocaleIDs(), result.getLocaleTitles());

163

164 final String localeID = Utils.getCurrentLocaleID();

165 tableSelectionView.setSelectedLocale(localeID);

166

167 documentTitle = result.getTitle();

168 tableSelectionView.setDocumentTitle(documentTitle);

169 Window.setTitle(documentTitle + ": " + tableSelectionView.getSelectedTableTitle());

170 }

171 };

172 final String localeID = Utils.getCurrentLocaleID();

173 OnlineGlomServiceAsync.Util.getInstance().getDocumentInfo(documentID, localeID, callback);

174

175 // get the reports list for the current table:

176 final AsyncCallback<Reports> callback_report = new AsyncCallback<Reports>() {

177 @Override

178 public void onFailure(final Throwable caught) {

179 // TODO: create a way to notify users of asynchronous callback failures

180 GWT.log("AsyncCallback Failed: OnlineGlomService.getReportsList()");

181 }

182

183 @Override

184 public void onSuccess(final Reports result) {

185 tableSelectionView.setReportList(result);

186 }

187 };

188 OnlineGlomServiceAsync.Util.getInstance().getReportsList(documentID, tableName, localeID, callback_report);

189

190 // Show the quickFind text that was specified by the URL token:

191 tableSelectionView.setQuickFindText(quickFind);

192 }

193

194 // This method will be called before the {@link TableSelectionActivity#start(AcceptsOneWidget, EventBus)} method and

195 // any time the Place changes after the start method has been called.

196 public void setPlace(final HasTablePlace place) {

197 documentID = place.getDocumentID();

198 tableName = place.getTableName();

199

200 try {

201 final HasRecordsPlace asPlace = (HasRecordsPlace) place;

202 quickFind = asPlace.getQuickFind();

203 } catch (final ClassCastException ex) {

204 quickFind = "";

205 }

206

207 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

208

209 // show the 'back to list' link if we're at a DetailsPlace, hide it otherwise

210 if (place instanceof DetailsPlace) {

211 tableSelectionView.setBackLinkVisible(true);

212 tableSelectionView.setBackLink(documentID, tableName, ""); // TODO: quickfind?

213 } else if (place instanceof ListPlace) {

214 tableSelectionView.setBackLinkVisible(false);

215 }

216

217 fillView(tableSelectionView);

218 }

219

220 private void clearView() {

221 clientFactory.getTableSelectionView().clear();

222

223 if (tableChangeHandlerRegistration != null) {

224 tableChangeHandlerRegistration.removeHandler();

225 tableChangeHandlerRegistration = null;

226 }

227

228 if (quickFindChangeHandlerRegistration != null) {

229 quickFindChangeHandlerRegistration.removeHandler();

230 quickFindChangeHandlerRegistration = null;

231 }

232

233 if (localeChangeHandlerRegistration != null) {

234 localeChangeHandlerRegistration.removeHandler();

235 localeChangeHandlerRegistration = null;

236 }

237

238 if (reportChangeHandlerRegistration != null) {

239 reportChangeHandlerRegistration.removeHandler();

240 reportChangeHandlerRegistration = null;

241 }

242 }

243

244 /*

245 * (non-Javadoc)

246 *

247 * @see com.google.gwt.activity.shared.AbstractActivity#onCancel()

248 */

249 @Override

250 public void onCancel() {

251 clearView();

252 }

253

254 /*

255 * (non-Javadoc)

256 *

257 * @see com.google.gwt.activity.shared.AbstractActivity#onStop()

258 */

259 @Override

260 public void onStop() {

261 clearView();

262 }

263

264 /*

265 * (non-Javadoc)

266 *

267 * @see org.glom.web.client.ui.View.Presenter#goTo(com.google.gwt.place.shared.Place)

268 */

269 @Override

270 public void goTo(final Place place) {

271 clientFactory.getPlaceController().goTo(place);

272 }

273

274 }